Javascript AJAX URL调用中未正确反映用户输入

尝试使用用户的城市输入（例如洛杉矶）并包含在Ajax URL参数中，但是当I

console.log（searchURL）

时。它不会在

“洛杉矶”

之间添加

“+”

，从而破坏URL。如何使URL包含两个单词的城市之间的

+

var apiKey = "&client_id=OTU3MDMwMHwxNTEwMjUwNDQ0LjI3"
var baseQueryURL = "https://api.seatgeek.com/2/events?" + apiKey;
console.log(baseQueryURL);

function runSearch(queryURL) {
  $.ajax({
      url: queryURL,
      method: 'GET'
    }).done(function(response) {
        console.log(response);
      };

      $("#submitSearch").on("click", function(event) {
        //prevents default event from occuring
        event.preventDefault();

        userCity = $("#userCity").val();
        console.log(userCity);
        //create variable queryCity to hold city queried with URL parameters
        var queryCity = "&venue.city=" + userCity;
        //create searchURL to pass in as queryURL in AJAX call
        searchURL = searchURL + queryCity;
        console.log(searchURL);
        runSearch(searchURL);
      });

值：

userCity = encodeURIComponent($("#userCity").val());

我用过这个：

userCity.split（“”）.join（“”）+